.banner{
    width: 100%;
    height: 600px;
    background: url(../img/about.jpg);
    background-size: 100% 100%;
}
.about-box{width: 1080px;margin: 15px auto;}
.about-box .top{
    height: 40px;
    border-bottom: 1px solid #dfdfe6;
    width: 1080px;
    margin: 15px auto;
}
  .about-box .top .left{
    float: left;
    font-size: 18px;
    font-weight: bold;
}
    .about-box .top .position{
    float: right;
}
        .about-box .content{}
